Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph D O'Brien

Physical Therapy Assistant in Warrenton, MO · enumerated 2018 · practices at Ssm Select Rehab St. Louis, LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1568966588

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Registry record

Entity type Individual (Type 1)

Name Joseph D O'Brien

Sex Male

Practice address 1 Town and Country Market Pl, Warrenton, MO, 63383

Phone (636) 235-3830

Enumeration date Mar 23, 2018

Last updated in NPPES Mar 23, 2018

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Joseph O'Brien?

The National Provider Identifier (NPI) for Joseph O'Brien is 1568966588, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joseph O'Brien practice?

The practice location on file with NPPES is in Warrenton, MO. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-23.